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Failure analysis of a cracked piston for diesel engine
Pages: 116-121
Year: Issue:  S1
Journal: Heat Treatment of Metals

Keyword:  活塞 裂纹 失效分析;
Abstract: 采用金相显微镜、扫描电子显微镜等检测工具,分析了某柴油机活塞产生裂纹的原因。分析结果表明:活塞表面的初晶硅在热循环的作用下开裂形成微裂纹,燃烧室边缘的高温降低了微裂纹扩展所需尺寸的门槛值,从而导致燃烧室边缘的微裂纹扩展形成宏观裂纹,活塞失效。
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